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Jamestown vs Helena, Mt Climate & Distance Between

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  • The distance between Jamestown, Saint Helena and Helena, Mt, Usa is approximately 12,522 km or 7,781 mi.
  • To reach Jamestown in this distance one would set out from Helena, Mt bearing 89.5° or E and follow the great circles arc to approach Jamestown bearing 134.4° or SE .
  • Jamestown has a subtropical hot desert climate (BWh) whereas Helena, Mt has a mid-latitude cool steppe climate (BSk).
  • The annual average temperature is 15.2 °C (27.4°F) warmer.
  • Average monthly temperatures vary by 23.6 °C (42.5°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to subcontinental.
  • Total annual precipitation averages 157.5 mm (6.2 in) less which is equivalent to 157.5 l/m² (3.87 US gal/ft²) or 1,575,000 l/ha (168,378 US gal/ac) less. About 1/2 as much.
  • The altitude of the sun at midday is overall 27.1° higher in Jamestown than in Helena, Mt.

Climate Comparison Table

The table shows values for Jamestown relative to Helena, Mt. You can also view this comparison the other way around from the perspective of Helena, Mt vs Jamestown.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +28 (+51) +24 (+44) +21 (+38) +14 (+24) +5 (+10) +-1 (-2) -7 (-13) +-6 (-12) +1 (+2) +8 (+15) +17 (+31) +24 (+44) +11 (+19)
average temperature iconAverage Temperature °C ( °F) +31 (+56) +27 (+49) +23 (+42) +18 (+32) +11 (+19) +4 (+8) -1 (-1) +0 (+1) +7 (+13) +13 (+23) +21 (+38) +28 (+50) +15 (+27)
minimum temperature iconAverage Min Temperature °C ( °F) +33 (+60) +30 (+54) +27 (+49) +22 (+39) +15 (+27) +9 (+16) +5 (+9) +6 (+11) +12 (+22) +18 (+33) +24 (+44) +31 (+55) +19 (+35)
rainfall iconAverage Precipitation mm (in) -8 (0) 0 (0) +2 (+0) -15 (-1) -27 (-1) -30 (-1) +5 (+0) -23 (-1) -24 (-1) -13 (-1) -12 (0) -12 (0) -158 (-6)
daylight iconAverage Daylight Hours & Minutes/ Day +4h 00' +2h 28' +0h 27' -1h 42' -3h 32' -4h 29' -4h 04' -2h 28' -0h 23' +1h 45' +3h 35' +4h 29'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (┬░) +61.6 +50.6 +29.9 +6.8 -9.8 -16.1 -10.1 +6.7 +29.5 +51.2 +61.4 +62.5   +27.1

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Jamestown vs Helena, Mt Discussion

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Climate Guides for Locations near Jamestown

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